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The tpm_dev_release function is only called for platform devices, not pnp

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devices, so we implemented the .remove function for pnp ones.  Since it's
code is very similar to the one inside tpm_dev_release, we've created a
helper function tpm_dev_vendor_release, which is called by both.

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Rajiv Andrade 2008-10-11 09:04:39 +11:00 committed by James Morris
parent f02a93645e
commit 253115b71f
3 changed files with 30 additions and 7 deletions
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22
drivers/char/tpm/tpm.c
View File

@ -1133,23 +1133,33 @@ int tpm_pm_resume(struct device *dev)
}
EXPORT_SYMBOL_GPL(tpm_pm_resume);
/* In case vendor provided release function, call it too.*/
void tpm_dev_vendor_release(struct tpm_chip *chip)
{
if (chip->vendor.release)
chip->vendor.release(chip->dev);
clear_bit(chip->dev_num, dev_mask);
kfree(chip->vendor.miscdev.name);
}
EXPORT_SYMBOL_GPL(tpm_dev_vendor_release);
/*
* Once all references to platform device are down to 0,
* release all allocated structures.
* In case vendor provided release function, call it too.
*/
static void tpm_dev_release(struct device *dev)
{
struct tpm_chip *chip = dev_get_drvdata(dev);
if (chip->vendor.release)
chip->vendor.release(dev);
chip->release(dev);
tpm_dev_vendor_release(chip);
clear_bit(chip->dev_num, dev_mask);
kfree(chip->vendor.miscdev.name);
chip->release(dev);
kfree(chip);
}
EXPORT_SYMBOL_GPL(tpm_dev_release);
/*
* Called from tpm_<specific>.c probe function only for devices

1
drivers/char/tpm/tpm.h
View File

@ -132,6 +132,7 @@ extern struct tpm_chip* tpm_register_hardware(struct device *,
const struct tpm_vendor_specific *);
extern int tpm_open(struct inode *, struct file *);
extern int tpm_release(struct inode *, struct file *);
extern void tpm_dev_vendor_release(struct tpm_chip *);
extern ssize_t tpm_write(struct file *, const char __user *, size_t,
loff_t *);
extern ssize_t tpm_read(struct file *, char __user *, size_t, loff_t *);

14
drivers/char/tpm/tpm_tis.c
View File

@ -630,12 +630,23 @@ static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
{"", 0} /* Terminator */
};
static __devexit void tpm_tis_pnp_remove(struct pnp_dev *dev)
{
struct tpm_chip *chip = pnp_get_drvdata(dev);
tpm_dev_vendor_release(chip);
kfree(chip);
}
static struct pnp_driver tis_pnp_driver = {
.name = "tpm_tis",
.id_table = tpm_pnp_tbl,
.probe = tpm_tis_pnp_init,
.suspend = tpm_tis_pnp_suspend,
.resume = tpm_tis_pnp_resume,
.remove = tpm_tis_pnp_remove,
};
#define TIS_HID_USR_IDX sizeof(tpm_pnp_tbl)/sizeof(struct pnp_device_id) -2
@ -683,6 +694,7 @@ static void __exit cleanup_tis(void)
spin_lock(&tis_lock);
list_for_each_entry_safe(i, j, &tis_chips, list) {
chip = to_tpm_chip(i);
tpm_remove_hardware(chip->dev);
iowrite32(~TPM_GLOBAL_INT_ENABLE &
ioread32(chip->vendor.iobase +
TPM_INT_ENABLE(chip->vendor.
@ -694,9 +706,9 @@ static void __exit cleanup_tis(void)
free_irq(chip->vendor.irq, chip);
iounmap(i->iobase);
list_del(&i->list);
tpm_remove_hardware(chip->dev);
}
spin_unlock(&tis_lock);
if (force) {
platform_device_unregister(pdev);
driver_unregister(&tis_drv);